Burner.



F. W. ROSENGREN.

BURNER.

APPLICATION FILED SEPT. 15, 1911A Patented Sept. 23, 1913.

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i BUEN-Ent y 'atentediieph 23; 'Application' iled Septembler 15, 1911.Serial No. $41479'.

` ejrqtyg-,E'jg Specification ofr Letters Patent. 19r1^3 e l a sectionalperspective of the screen. Fig:

6 in a plan of a modified form of the invention.

A denotes a burner-tuleewhich inav be connected' in the usual' andsuitable manner to a'supply of gas orv .vapor,-as well understood' inthe art. A. hollow enlarged head it) iS Screw-threaded' to the end ot'pipe A. shoulder 11' is formed in said head',V to

rovide a seat for the screen 1Q. the latter 'enig providedwith shoulders13 adapted to rest upon shoulder 131. A collar 11- is screwthreaded tothe lower end of head1() and has .To all whom/ may zimmern.

` Be it known that L FRANK Wr. `-osnni eineN, a `citizen of the UnitedStates, residentof tflhieago` in the eounty ot Cook' and "State ofillinois, have invented certain new "fand useful" Improvements inBurners, ot

vihich the following is a full, clear, and Iexact. description.

'The invention relates'to vapor-burners, and more particularly to thescreen ordivider usually employed 'atV the out-let end of theburner-pipe, and through which the vapor passes before beingr ignitedin' `proximity to the lusual mantle.

` Heretofore it has been common practice "to provide a` screen formedot' gauze or a flexible eorrugated Strip, for mixing the oonstituentsof,` and .distributing the or vapor `in transit to the point ot consump-`tion,`and ithas been found that the prox.- iniity of the flame to thescreen, rauses the latter to become affected b v the heat, so thatoccasional replacementv is necessary, and that such screens, in time,become disintegmted from use.

One object of the invention is to prov-ide an improved screen', ordivider which may be termed ot' Solid metal and by which theeonstituents of the vapor will be thor-- oughly eoininingled, or the gasor the vapor will .be evenly distributed in passing therethrough. Byforming the screen out oft a Solid piece or' bloeit oi' metal'1 theparte thereof may be made oi' Such thiekness and Strength that theylwill. not be disintegrated bv heat and the screen i may be so formedthat the gas or vapor muy be caused to nass indirectly ll'ierethrmxghto' etleet more thorough mixture of the eonstit uents and distributionof the gas or vapor.

The invention consists in the novel feature hereinafter Set forth andmore particu larly defined by claims at the conclusion. hereof. f

In the drawings: Figure 1 is a eide elevation of a. burner embodying theinvention a portion of the mantle being broken away. Fig. 2 is aninverted plan of the ii'nproved screen in the burner-pipe. liig. is asection taken on line 3*?, ot Fig. 2. Fig. /l-

a `Section taken on line ,t-w'iof Fig'. Q. Fig. 5

adapted to engageshoulders 16 formed on the screen, to clamp'the screenagainst shoulder l1 and removably sei-.ure it to the head.

'.lhe screen is tormedot' a single piece or block of metal, Such asbrass. and its upper portion is formed with a serie@ of parallel grooves18 extending entirely arrose the upper facev ot the screen, leaving ribsor bars 19 therebetween. They lower face ofthe screen. is formed with aseries of parallel .grooves 29" extending; transversely or ati rightangles, to the grooves 1S, leaving a series of ribs or bars 21therebetween. which 1itex1d,1t right angles or transversely to the ribsl1X5". Grooves 18a-11151520 are ot .such depth that they overlap 4orintersect each other and resultantly, the fapor-.will not necessaritvpass directly through the screen, but will pass between thefrib or bars19, and portions ot the vapori-Will encounter the lower edges of theribs 21 which will :u't as' balleS and serve. to eti'eet a more thorhughronnningling oi the mnetituents and distribution oi" the vapor. Thisscreen may be pnfznlueed ar a low cost, by groaning a solid pieeeorblock ot metal with parallel grooves, in one direction by means of aSeries ot' tools and then grooving' the other face thereof in transversedirection thereto. The improved screen will he durable by reason ofitsintegral construction, as: coinpared with one made ot tine sott wirt`er :1 bentstrip, and will be rigid througlwui. Furthermore, by reason ofthe reiativelv transverse disposition oi the upper and lower bars andgrooves und b v providing. cross; eoninnlnieatien between the lower aninwardly extending imge 15 which isV m imam Y grooves and uppergrooves,the'screen serves to eicently'divide andidistribute the vapor intoa'series of small jets and canals, the. .constituents ofthe vapor tocommingle With `each' other so .that thevdpor will. burnl "evenly, andso that the iame will n ot cause Aexcessive heat at anyone partof themantle.

The device shown-is formed so .that the grooves therein t-may. be c ut.or Wrought as distinguished from being cast with` the groovesorfopenirigs therein.- fIn practice, there isa marked differencelbetween the operation of "a screen formed of cafst metal and one ofWrought metal, because the cast fmetal disintegrates quicker thanwrought metal, and furthermore,- the 'surface and edges of the castmetal are not sharp 'and cleanfand, therefore, theburner is rendered lnoisy, on the other'hand,'when 'the screen is formed of Wroughtmetalvvith clean4 or cutedges and plain surfaces, this objection is `Theinvention thus provides a screen `which can be produced at a lowcost andwhich islrigid and durable and veffectively f causes -thecommingling ofthe constituents and distribution of the vapor.

Inl Fig. 6 a modification o f the invention is illustrated, in vthichthe seriesof grooves 18a inone faceare circular in form-,vas dis--tinguished from straight.

The invention is not to be restricted to the details set yforth sincethese may be modi- .iied by the skilled mechanic, 'Within the scope'ofthe appended claims, Without del. The combination with a burner of a lscreen formed of ablock ofmetal having two ofits opposite faces, thegrooves being cut to leave ribs or bars on each of said faces, thegrooves in one face communicating with and being cut transversely tothose in the other face, the bars or ribs on one face being transverseto tho'seon the other.

2. The combination with 'a burner of a screen formed of a block of metalhaving a series ofcontinucus grooves cut in each of tivo ofitsopposite'faces,the grooves being cut to leave 4ribs or bars on each ofsaid faces, Ithe grooves in Vone face being cut of suflicient depth tointersect and extend beyond those in the other face and crosswisethereof, the bars'or ribs on one face being transverse of those on theother.

3. The combination' with a burner of a screen formed of a block of metaland having a plurality of Iseries of straight grooves cut thereinleaving ribs or bars between the grooves,` the ribs or bars of oneseries ea:-

4a series of continuous grooves'c'ut in each of

